A new study of the Iberian script findings withing the (partly disputed but most likely very real) ostraka graffiti at Iruña-Veleia (Basque-Roman city of Antiquity on which I have written extensively in the past) is freely available online.
Antonio Arnaiz-Villena & Diego Rey, Iberian-Tartessian scripts/graffiti in Iruna-Veleia (Basque Country, North Spain): findings in both Iberia and Canary Islands-Africa. International Journal of Modern Anthropology 2012. Freely accessible → LINK
760 officially recognized scripts on ceramics from Iruña-Veleia excavated by the archaeology firm Lurmen S.L. (approximately between years 2002-2008)have been analyzed. A number of these ceramics contains scripts which may be assimilated to Iberian/Tartessian writings. This number may be underestimated since more studies need to be done in already available and new found ceramics. This is the second time that Iberian writing is found by us in an unexpected location together with the Iberian-Guanche inscriptions of Lanzarote and Fuerteventura (Canary Islands). On the other hand, naviform scripting, usually associated to Iberian rock or stone engraving may have also been found in Veleia. Strict separation, other than in time and space stratification, between Iberian and (South) Tartessian culture and script is doubted.
Source: Ama Ata[es].